Wheelchair elevator

Abstract

A wheelchair elevator includes a base, a support frame, and a movable flat. The support frame is positioned on the base, consisting of two X-shaped frames, and the movable flat is fixed on the support frame, having a receptive base respectively at two lengthwise sides a little lower than the flat. The receptive base has a lengthwise wheel passageway and a stopper behind the passageway. The flat with the support frame is raised up or lowered down by a shrinkable air tube pumped by a swing rod. Then wheelchair can be pushed on the two wheel passageways of the receptive base and stopped by the stoppers, and then the flat with the support frame is raised by pumping air into the shrinkable air tube to a needed height for boarding in a vehicle or lowered down from the vehicle.

1 . A wheelchair elevator comprising: 
 a base provided with a slide rail respectively at two sides, a push lever, a swing rod and a pull rod at one side;    a support frame fixed on said base, consisting of two X-shaped frames pivotally connected with each other with a pivot, a first X-shaped frame having its lower two ends fixed with said base and its upper two ends fixed with a movable flat, the first X-shaped frame having its upper two ends connected with a connective rod, a second X-shaped frame having its lower two ends connected with a connective rod, said connective rods respectively having two ends respectively fixed with a roller, said rollers of the lower ends of said second X-shape frame resting on a slide rail of said base, a shrinkable air tube provided in a lower portion of said support frame, one end of said shrinkable air tube connected with said base; and,    said movable flat fixed on said support frame and having a receptive base respectively at two lengthwise sides, each said receptive base positioned a little lower than; said flat and provided with a wheel passageway for the wheels of a wheelchair to move thereon, and a U-shaped stopper fixed behind said passageway for stopping securely the wheels, and a slide rail at two lengthwise sides under the bottom of said flat for said rollers of said support frame to rest and slide thereon when said support frame is raised or lowered.